1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
|
/*
Copyright (c) 2007-2010 iMatix Corporation
This file is part of 0MQ.
0MQ is free software; you can redistribute it and/or modify it under
the terms of the Lesser GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
0MQ is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
Lesser GNU General Public License for more details.
You should have received a copy of the Lesser GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "../../include/zmq.hpp"
#include "../../foreign/xmlParser/xmlParser.cpp"
int main (int argc, char *argv [])
{
if (argc != 2) {
fprintf (stderr, "usage: zmq_forwarder <config-file>\n");
return 1;
}
XMLNode root = XMLNode::parseFile (argv [1]);
if (root.isEmpty ()) {
fprintf (stderr, "configuration file not found or not an XML file\n");
return 1;
}
if (strcmp (root.getName (), "forwarder") != 0) {
fprintf (stderr, "root element in the configuration file should be "
"named 'forwarder'\n");
return 1;
}
XMLNode in_node = root.getChildNode ("in");
if (in_node.isEmpty ()) {
fprintf (stderr, "'in' node is missing in the configuration file\n");
return 1;
}
XMLNode out_node = root.getChildNode ("out");
if (out_node.isEmpty ()) {
fprintf (stderr, "'out' node is missing in the configuration file\n");
return 1;
}
// TODO: make the number of I/O threads configurable.
zmq::context_t ctx (1);
zmq::socket_t in_socket (ctx, ZMQ_SUB);
in_socket.setsockopt (ZMQ_SUBSCRIBE, "", 0);
zmq::socket_t out_socket (ctx, ZMQ_PUB);
int n = 0;
while (true) {
XMLNode bind = in_node.getChildNode ("bind", n);
if (bind.isEmpty ())
break;
const char *addr = bind.getAttribute ("addr");
if (!addr) {
fprintf (stderr, "'bind' node is missing 'addr' attribute\n");
return 1;
}
in_socket.bind (addr);
n++;
}
n = 0;
while (true) {
XMLNode connect = in_node.getChildNode ("connect", n);
if (connect.isEmpty ())
break;
const char *addr = connect.getAttribute ("addr");
if (!addr) {
fprintf (stderr, "'connect' node is missing 'addr' attribute\n");
return 1;
}
in_socket.connect (addr);
n++;
}
n = 0;
while (true) {
XMLNode bind = out_node.getChildNode ("bind", n);
if (bind.isEmpty ())
break;
const char *addr = bind.getAttribute ("addr");
if (!addr) {
fprintf (stderr, "'bind' node is missing 'addr' attribute\n");
return 1;
}
out_socket.bind (addr);
n++;
}
n = 0;
while (true) {
XMLNode connect = out_node.getChildNode ("connect", n);
if (connect.isEmpty ())
break;
const char *addr = connect.getAttribute ("addr");
if (!addr) {
fprintf (stderr, "'connect' node is missing 'addr' attribute\n");
return 1;
}
out_socket.connect (addr);
n++;
}
zmq::device (ZMQ_FORWARDER, in_socket, out_socket);
return 0;
}
|
